| |
.jpg) |
|
|
TECHNICAL SPECIFICATIONS - National Aeronautic Standard 986
|
| Series # |
No. of
Flutes
|
Helix
Angle |
Material Cut |
Tool
Material |
 |
 |
 |
| |
|
PM-33, PM-37
PM-R33, PM-R37
23,25,27
33, 35, 37
RF33, RF35
R33, R35, R37
|
3
3
2
3
3
3
|
37°
37°
37°
37°
37°
37°
|
Aluminum, Magnesium, and
Zinc Alloys
|
PM4
PM4
M2
M2
M2
M2
|
11°
20°
11°
11°
11°
20°
|
10°
––
10°
10°
10°
––
|
25°
––
25°
25°
25°
––
|
| |
|
21,28, 29
52, 55, 47, 67, 87
59, 42
|
2
4, 6, 8
4, 6, 8
|
30°
321/2°
321/2°
|
Steel, Brass, Bronze, Iron, Carbon, Manganese, Steel for machining material of medium hardness.
|
M2
M2
M2
|
10°
10°
10°
|
12°
8°
8°
|
25°
16°
16°
|
| |
|
24, 26
54, 56, 59, 44
48, 68, 88
RF54, RF56
|
2
4, 6, 8
4, 6, 8
4, 6, 8
|
35°
35°
35°
35°
|
To machine most materials up to medium hardness; 4 - 6 flute for Titanium Base & Stainless Steel Alloys; 6 - 8 flute for Nickel Base Alloys.
|
M42
M42
M42
M42
|
10°
10°
10°
10°
|
10°
10°
10°
10°
|
20°
20°
20°
––
|
| |
|
RS34, RS54, R54
R68, R88, R56
|
3, 4, 5, 6, 8
3, 4, 5, 6, 8
|
30°
30°
|
Material of medium hardness up to 32 R/c inclusive Aluminum Alloys, Plastics, Annealed Titanium, & Non-Hardenable Stainless, Alloy & Cast Steels, Brasses & Bronzes.
|
M42
M42
|
15°
15°
|
––
––
|
––
––
|
| |
|
FS34, FS54, F54
F68, F88, F56
|
3, 4, 5, 6, 8
3, 4, 5, 6, 8
|
30°
30°
|
Material of medium to high hardness inclusive Stainless & Tool Steels, Super Hi-Tempurature, Nickel & Titanium Alloys, Nitriding & Heat-treated Cast Iron & Steels.
|
M42
M42
|
15°
15°
|
––
––
|
––
––
|
|
